Across
- 2. What is it called when we cut down trees?
- 5. What energy comes from the sun?
- 6. What do we call plants and animals that are in danger of disappearing?
- 8. What is it called when too much water covers land?
- 9. What is the variety of plants and animals called?
- 11. What do we call dirt or chemicals in water?
- 12. What gas causes climate change?
Down
- 1. What causes animals to lose their homes?
- 3. What do we do with bottles and cans to reuse them?
- 4. What is the term for Earth's rising temperature?
- 7. What do we call planting trees again?
- 10. What layer protects us from the sun?